Oil-well fishing tool



' p -1 '1930. F. J HINDERLITER 1,776,028

OIL WELL FISHING TOOL Original Filed May 25, 1927 2f I 57 i 5 Itll I 50 71 12K A Patented Sept. 16, 1930 V FRANK J. ninnnnnrrnn, on TULSA,

COMPANY, or reuse,

OKLAHOMA, ASSIGNOH- T0 HINDERLITER TOOL OKLAHOMA, A CORPORATION OF OKLAHOMA OIL-WELL FISHING TOOL Original application filed May 25, 1927, Serial No. 194,015. Divided and this application filed September My invention pertains to rotary mechanism for use in connection with the drilling of oil wells and more particularly to a method of and an apparatus for removing rotary disks, cones, cutters, broken pieces of fish tail bits and the like from a well in which they have broken off the tool or bit.

The present invention constitutes divisional subject matter taken from applicants copending patent application, Serial No. 194,015, filed May 25, 1927.

v In the drilling of an oil well or the like quite frequently the drill bit or cutter is broken and the fragments of the same gravitate to the bottom of the well. Obviously, these fragments of metal interfere with the further drilling of the well and may result in the breaking or damaging of additional tools. It is, therefore, usually essential that they be removed before the drilling operation is continued.

An object of this invention is to provide a method of and an apparatus for fishing these metal fragments broken off the drilling tools from the well.

Another object of my invention is to provide a fishing tool for use in connection with oil wells, adapted to be rotated in the bottom of the well to force and thread the tool fragments upwardly, and having hydraulic means for facilitating the rotation of the tool and for assisting the tool in forcing the broken tool fragments upwardly out of the bottom of the well.

In accordance with the general features of my invention, I provide a rotary cylindrical tool having its lower end formed into a bitlikemember. Positioned in the tool and extending downwardly through it is a mandrel member for discharging a hydraulic jet through an opening disposed at the extreme lower end of the bit-likemember. The shape of the bit-like member is such that it will gradually convey the broken tool fragment upwardly until it is in a position to gravitate into the interior of the fishing tool. Thereafter the tool may be withdrawn upwardly from the well and the metal fragment therein may be removed.

Of course, it is to be understood that al- Serial No. 395,843.

though my invention is especially designed for use in the drilling of oil wells, it is not to be thus limited, for, obviously, it could be used in other capacities without deviating from the features of my invention.

Other objects and advantages of my invention will more fully appear from the following detailed description taken in connection with the accompanying drawing which illustrates a single embodiment thereof and in which: Figure 1 is an elevation of one form of my invention;

Figure 2 is a sectional view partly in elevation taken 011 substantially line IIII of Figure 1, looking in the direction indicated by the arrows;

Figure 3 is an end View taken at the bottom of the device as shown in Figure 2;

Figure 4 is a sectional view taken on substantially line IV-IV of Figure 2, looking downwardly;

Figure 5 is a sectional View taken on the line VV of Figure 2;

Figure 6 is a sectional view taken on the line VI-VI of Figure 2; and

Figure 7 is a sectional View taken on the line VIIVII of Figure 2, looking in the direction indicated by the arrows.

In the drawings:

The form of my invention illustrated in the accompanying drawings is particularly adapted for use in wells where it is found that the earth at the bottom of the well is relatively hard.

The device comprises essentially three parts, namely, the bit 50, an intermediate sleeve 51 and the top 52. Both the bit and the top 52 are threaded into the ends of an intermediate sleeve 51.

The top 52 includes a cylindrical opening 53 threaded at its upper end 5%. The lower end of the top 52 is reduced at 55 forming a shoulder 56. This reduced end 55 is threaded at 57 onto the upper end of the intermediate sleeve 51. The shoulder 56 of top 52 is adapted to abut the upper end of the sleeve 51. The threaded opening 54 of the device is adapted to have secured therein the lower end of suitable string of fishing tools for loweror the 7 like. 1

ed with a helical thread 58.

ing the tool of my invention into a [Well The outer periphery of sleeve 51is provid- This helical thread 58 is disposed in alignment and in cominunidationfvvith the helical thread 59 on the upper end of the bit One side of'the sleeve. 51 is providediwitha slot 60 through which; the broken drill parts are adapted to m enter-the interior of the device. v The upper end ofbit 50 is provided w th a' reduced portion 61 and a shoulder 62adapt'ed' to abut the lower end of'sleeve15l.., This re 'duced end'61 is threaded into anopening .63

in'the lower'end ofsleeve 51. From this it will be readily evident that both the top and bit are readily detachable from theinterme diate sleeve 51.

Positionedwlthin the bore of sleeve 51: is a mandrel or, tubular member 65 throughwhich V a stream of water is conveyed from the string of fishing tools connected to the tool of my invention to the bit-like member'50, 1 The up er end of this member 65 is provided with al ange .or head 66 which constitutes a closure for the annular opening 53 and top '52.

7 Also, if, it is so desired the head may be provided with a number of relatively smallopenv ings 67 through, which'wires maybe-inserted forthe purpose of moving the mandrel mem 1 her 65 bodily upward out of the top 52.

I The lower end of the mandrel member 65 extends into an openingy68 in the reduced end 61 ofbit-50. *This lower end of themember 65 isdisposedjin axial alignment With'the "if open ng 70 Which extendsclear thlmlgh the time} i The bit .50 has a'pair of helical grooves 71 fee.

of a suflicient pitch and lead to carry anymaterial entering therein up to the helical thread 59'. The lower end of the bit, as shown invFigures 1 and3, is substantially straight as indicated at 72. This straight portion has a diameter substantiallyequal to that of the sleeve 51. Also, it is to be noted that the a straight edge 72 of bit50'may be provided with a cutting surface 73. a I 1 lThe operation' of thi toolof my invention viszbriefly as follows a A rotary member is threaded'into the up perend 54 of opening 53in the top 52 and the device is then lowered into the well. The

mandrel 65 inthis device of my invention performs the fnnctionof conducting a jet 'of water fromthe string of fishing tools into the drilling member orbit 50'. This'jet passes I through the axial opening 70 in the bit 50 and is discharged at the lower end'of the bit into the-bottom of the well. It will be evident that .Q

thiswater will materially aid the bit in the drilling operation. Y 7 e When the bit 50 strikes the bottom of the well, the device is actuated to revolve the bit.

Qbviously,by revolving the bit 5O, the dirt at the bottom of the well will be drilled up- Oklahoma.

which are to be removed from I the well. These parts, after leavingfthegrooves 71 in tion, they will obviously gravitate into the .wardly along'the grooves 71into the'helical I threads 59 and 58. As the dirt moves upi wardly it carriesywith it the brokendrill parts. n

the; bit '50..,come: into ren gagement with the helical threads 59 and 58, whichfthreads carry, thwart p r y t9 resit j9i PP it? h slot 60. 'Afterthedrill parts; reach this post f v .1. 75 interiorofthesleeve 5'1. Thereafter the 1:0:

tation ofthedevice maybe arrested and thev device may. bewithdrawnbodil'y from the well. As previously pointed out, the .advanl-- V tageofthe drill or bit'50 at thelowerend of; the sleeve 51 is, that itwill dig its way into the earthshouldithe earthberelat-ively hard 7 or should the bottom of the well present a relatively flat surface to the action thereof.

Now i t isof course tobe unde'rstoodthat although I have illustrated and 5 6 described in v detail the preferred form" of inventiomi the invention is not to be thuslimited; but i only in so far as defined by 'the 'scopeand spirit of -t'he'appended claims. i 'f I. claim as my invention: I

acted upon by-said means;

pocket and a bitelikemember connected to the lowerend'of said meansfor. displacing said. part from the bottom of the Welland for conveyingit to a position where it can be acted uponby said means said bit-like: member including a helical groove in'whichf the part is adapted to beconveyedand having its, uppermost end terminating adjacentsaid means.

2. In, combination ajtool for removing broken drill parts and the like-from a Well; member formed'to be lowered "to the bottom" a v of the wellandhaving a pocket'forreceiving '1 afbroken drill" part, meansconnected with, said memberjfor' causingthe part to crawl; upwardly alongside said meansza-into said Intestimonyiwhereof have hereunto sub-Q1 scribed H y 'nameat Tulsa, TulsalCounty,

FRA INDERLITER. i

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